Answer:
atomic number 3
boiling point 1,342 °C (2,448 °F)
specific gravity 0.534 at 20 °C (68 °F)
oxidation state +1
electron configuration 2-1 or 1s22s1
Explanation:
i think this Is right 99% sure
All are gases so no visible reaction persay, unless in closed quarters and then massive pressure.
The answer is A i think from the options though the answers are worded a bit weird
Pressure on the inside of the balloon was greater than the pressure on the outside of the balloon so it pushed out until the pressures equalized.
There doesn't seem to be a clear answer, it is placed in the center when it's substances is on the corners it doesn't give anything else